DE69737012T2 - Sprachkodierer, sprachdekodierer und aufzeichnungsmedium dafür - Google Patents
Sprachkodierer, sprachdekodierer und aufzeichnungsmedium dafür Download PDFInfo
- Publication number
- DE69737012T2 DE69737012T2 DE69737012T DE69737012T DE69737012T2 DE 69737012 T2 DE69737012 T2 DE 69737012T2 DE 69737012 T DE69737012 T DE 69737012T DE 69737012 T DE69737012 T DE 69737012T DE 69737012 T2 DE69737012 T2 DE 69737012T2
- Authority
- DE
- Germany
- Prior art keywords
- pitch
- pulse
- sound source
- search
- peak
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000013598 vector Substances 0.000 claims description 542
- 230000003044 adaptive effect Effects 0.000 claims description 391
- 238000000034 method Methods 0.000 claims description 156
- 238000004364 calculation method Methods 0.000 claims description 150
- 230000005540 biological transmission Effects 0.000 claims description 49
- 238000013139 quantization Methods 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 33
- 238000004458 analytical method Methods 0.000 claims description 23
- 230000001965 increasing effect Effects 0.000 claims description 18
- 230000000670 limiting effect Effects 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000006870 function Effects 0.000 claims description 3
- 239000011295 pitch Substances 0.000 claims 155
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000012546 transfer Methods 0.000 description 125
- 230000015572 biosynthetic process Effects 0.000 description 64
- 238000003786 synthesis reaction Methods 0.000 description 64
- 230000003213 activating effect Effects 0.000 description 46
- 230000004044 response Effects 0.000 description 45
- 238000010586 diagram Methods 0.000 description 29
- 230000002829 reductive effect Effects 0.000 description 23
- 238000005070 sampling Methods 0.000 description 17
- 238000010276 construction Methods 0.000 description 16
- 238000005314 correlation function Methods 0.000 description 12
- 230000006866 deterioration Effects 0.000 description 10
- 230000000630 rising effect Effects 0.000 description 9
- 238000012937 correction Methods 0.000 description 7
- 230000001934 delay Effects 0.000 description 7
- 239000000284 extract Substances 0.000 description 7
- 230000000737 periodic effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 4
- 230000001902 propagating effect Effects 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 101100189378 Caenorhabditis elegans pat-3 gene Proteins 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L2019/0001—Codebooks
- G10L2019/0004—Design or structure of the codebook
- G10L2019/0005—Multi-stage vector quantisation
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20443996 | 1996-08-02 | ||
| JP20443996 | 1996-08-02 | ||
| JP3672697 | 1997-02-20 | ||
| JP03672697A JP4063911B2 (ja) | 1996-02-21 | 1997-02-20 | 音声符号化装置 |
| PCT/JP1997/002703 WO1998006091A1 (fr) | 1996-08-02 | 1997-08-04 | Codec vocal, support sur lequel est enregistre un programme codec vocal, et appareil mobile de telecommunications |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69737012D1 DE69737012D1 (de) | 2007-01-11 |
| DE69737012T2 true DE69737012T2 (de) | 2007-06-06 |
Family
ID=26375818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69737012T Expired - Lifetime DE69737012T2 (de) | 1996-08-02 | 1997-08-04 | Sprachkodierer, sprachdekodierer und aufzeichnungsmedium dafür |
Country Status (6)
| Country | Link |
|---|---|
| US (4) | US6226604B1 (ja) |
| EP (2) | EP1553564A3 (ja) |
| CN (1) | CN1163870C (ja) |
| AU (1) | AU3708597A (ja) |
| DE (1) | DE69737012T2 (ja) |
| WO (1) | WO1998006091A1 (ja) |
Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2338630B (en) * | 1998-06-20 | 2000-07-26 | Motorola Ltd | Speech decoder and method of operation |
| JP3180786B2 (ja) * | 1998-11-27 | 2001-06-25 | 日本電気株式会社 | 音声符号化方法及び音声符号化装置 |
| JP4008607B2 (ja) * | 1999-01-22 | 2007-11-14 | 株式会社東芝 | 音声符号化／復号化方法 |
| JP3594854B2 (ja) * | 1999-11-08 | 2004-12-02 | 三菱電機株式会社 | 音声符号化装置及び音声復号化装置 |
| USRE43209E1 (en) | 1999-11-08 | 2012-02-21 | Mitsubishi Denki Kabushiki Kaisha | Speech coding apparatus and speech decoding apparatus |
| US7386444B2 (en) * | 2000-09-22 | 2008-06-10 | Texas Instruments Incorporated | Hybrid speech coding and system |
| US6480821B2 (en) * | 2001-01-31 | 2002-11-12 | Motorola, Inc. | Methods and apparatus for reducing noise associated with an electrical speech signal |
| US6996522B2 (en) * | 2001-03-13 | 2006-02-07 | Industrial Technology Research Institute | Celp-Based speech coding for fine grain scalability by altering sub-frame pitch-pulse |
| KR100464369B1 (ko) * | 2001-05-23 | 2005-01-03 | 삼성전자주식회사 | 음성 부호화 시스템의 여기 코드북 탐색 방법 |
| JP3888097B2 (ja) * | 2001-08-02 | 2007-02-28 | 松下電器産業株式会社 | ピッチ周期探索範囲設定装置、ピッチ周期探索装置、復号化適応音源ベクトル生成装置、音声符号化装置、音声復号化装置、音声信号送信装置、音声信号受信装置、移動局装置、及び基地局装置 |
| US7272555B2 (en) * | 2001-09-13 | 2007-09-18 | Industrial Technology Research Institute | Fine granularity scalability speech coding for multi-pulses CELP-based algorithm |
| JP2004101588A (ja) * | 2002-09-05 | 2004-04-02 | Hitachi Kokusai Electric Inc | 音声符号化方法及び音声符号化装置 |
| FR2865310A1 (fr) * | 2004-01-20 | 2005-07-22 | France Telecom | Procede de restauration de partiels d'un signal sonore |
| JP3827317B2 (ja) * | 2004-06-03 | 2006-09-27 | 任天堂株式会社 | コマンド処理装置 |
| US7240252B1 (en) * | 2004-06-30 | 2007-07-03 | Sprint Spectrum L.P. | Pulse interference testing in a CDMA communication system |
| DE102004049347A1 (de) * | 2004-10-08 | 2006-04-20 | Micronas Gmbh | Schaltungsanordnung bzw. Verfahren für Sprache enthaltende Audiosignale |
| TWI279774B (en) * | 2005-04-14 | 2007-04-21 | Ind Tech Res Inst | Adaptive pulse allocation mechanism for multi-pulse CELP coder |
| US8766995B2 (en) * | 2006-04-26 | 2014-07-01 | Qualcomm Incorporated | Graphics system with configurable caches |
| US20070268289A1 (en) * | 2006-05-16 | 2007-11-22 | Chun Yu | Graphics system with dynamic reposition of depth engine |
| US8884972B2 (en) * | 2006-05-25 | 2014-11-11 | Qualcomm Incorporated | Graphics processor with arithmetic and elementary function units |
| US8869147B2 (en) * | 2006-05-31 | 2014-10-21 | Qualcomm Incorporated | Multi-threaded processor with deferred thread output control |
| US8644643B2 (en) * | 2006-06-14 | 2014-02-04 | Qualcomm Incorporated | Convolution filtering in a graphics processor |
| US8766996B2 (en) * | 2006-06-21 | 2014-07-01 | Qualcomm Incorporated | Unified virtual addressed register file |
| US20080276359A1 (en) * | 2007-05-09 | 2008-11-13 | Morgan Terra J | Drain clog remover |
| JP4882899B2 (ja) * | 2007-07-25 | 2012-02-22 | ソニー株式会社 | 音声解析装置、および音声解析方法、並びにコンピュータ・プログラム |
| EP2224432B1 (en) * | 2007-12-21 | 2017-03-15 | Panasonic Intellectual Property Corporation of America | Encoder, decoder, and encoding method |
| US20090319263A1 (en) * | 2008-06-20 | 2009-12-24 | Qualcomm Incorporated | Coding of transitional speech frames for low-bit-rate applications |
| CN101604525B (zh) * | 2008-12-31 | 2011-04-06 | 华为技术有限公司 | 基音增益获取方法、装置及编码器、解码器 |
| US8504378B2 (en) * | 2009-01-22 | 2013-08-06 | Panasonic Corporation | Stereo acoustic signal encoding apparatus, stereo acoustic signal decoding apparatus, and methods for the same |
| US8670990B2 (en) * | 2009-08-03 | 2014-03-11 | Broadcom Corporation | Dynamic time scale modification for reduced bit rate audio coding |
| WO2011048810A1 (ja) * | 2009-10-20 | 2011-04-28 | パナソニック株式会社 | ベクトル量子化装置及びベクトル量子化方法 |
| KR101761629B1 (ko) * | 2009-11-24 | 2017-07-26 | 엘지전자 주식회사 | 오디오 신호 처리 방법 및 장치 |
| US8990094B2 (en) * | 2010-09-13 | 2015-03-24 | Qualcomm Incorporated | Coding and decoding a transient frame |
| US9082416B2 (en) | 2010-09-16 | 2015-07-14 | Qualcomm Incorporated | Estimating a pitch lag |
| US8862465B2 (en) | 2010-09-17 | 2014-10-14 | Qualcomm Incorporated | Determining pitch cycle energy and scaling an excitation signal |
| EP2798631B1 (en) * | 2011-12-21 | 2016-03-23 | Huawei Technologies Co., Ltd. | Adaptively encoding pitch lag for voiced speech |
| EP3301677B1 (en) | 2011-12-21 | 2019-08-28 | Huawei Technologies Co., Ltd. | Very short pitch detection and coding |
| CN103426441B (zh) | 2012-05-18 | 2016-03-02 | 华为技术有限公司 | 检测基音周期的正确性的方法和装置 |
| US9589570B2 (en) * | 2012-09-18 | 2017-03-07 | Huawei Technologies Co., Ltd. | Audio classification based on perceptual quality for low or medium bit rates |
| CA2887009C (en) * | 2012-10-05 | 2019-12-17 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | An apparatus for encoding a speech signal employing acelp in the autocorrelation domain |
| US9208775B2 (en) | 2013-02-21 | 2015-12-08 | Qualcomm Incorporated | Systems and methods for determining pitch pulse period signal boundaries |
| CN113192517B (zh) * | 2020-01-13 | 2024-04-26 | 华为技术有限公司 | 一种音频编解码方法和音频编解码设备 |
Family Cites Families (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1252568A (en) * | 1984-12-24 | 1989-04-11 | Kazunori Ozawa | Low bit-rate pattern encoding and decoding capable of reducing an information transmission rate |
| US4924517A (en) * | 1988-02-04 | 1990-05-08 | Nec Corporation | Encoder of a multi-pulse type capable of controlling the number of excitation pulses |
| DE68922134T2 (de) * | 1988-05-20 | 1995-11-30 | Nec Corp | Überträgungssystem für codierte Sprache mit Codebüchern zur Synthetisierung von Komponenten mit niedriger Amplitude. |
| JP2588963B2 (ja) | 1989-03-07 | 1997-03-12 | 日本電信電話株式会社 | 音声合成装置 |
| WO1990013112A1 (en) * | 1989-04-25 | 1990-11-01 | Kabushiki Kaisha Toshiba | Voice encoder |
| US5261027A (en) * | 1989-06-28 | 1993-11-09 | Fujitsu Limited | Code excited linear prediction speech coding system |
| JPH0332228A (ja) * | 1989-06-29 | 1991-02-12 | Fujitsu Ltd | ゲイン―シェイプ・ベクトル量子化方式 |
| JP2940005B2 (ja) * | 1989-07-20 | 1999-08-25 | 日本電気株式会社 | 音声符号化装置 |
| US5097508A (en) * | 1989-08-31 | 1992-03-17 | Codex Corporation | Digital speech coder having improved long term lag parameter determination |
| US5307441A (en) * | 1989-11-29 | 1994-04-26 | Comsat Corporation | Wear-toll quality 4.8 kbps speech codec |
| US5208862A (en) * | 1990-02-22 | 1993-05-04 | Nec Corporation | Speech coder |
| JP2736157B2 (ja) | 1990-07-17 | 1998-04-02 | シャープ株式会社 | 符号化装置 |
| JP2626223B2 (ja) * | 1990-09-26 | 1997-07-02 | 日本電気株式会社 | 音声符号化装置 |
| US5235670A (en) * | 1990-10-03 | 1993-08-10 | Interdigital Patents Corporation | Multiple impulse excitation speech encoder and decoder |
| US5127053A (en) * | 1990-12-24 | 1992-06-30 | General Electric Company | Low-complexity method for improving the performance of autocorrelation-based pitch detectors |
| JP2538450B2 (ja) | 1991-07-08 | 1996-09-25 | 日本電信電話株式会社 | 音声の励振信号符号化・復号化方法 |
| JP3194481B2 (ja) * | 1991-10-22 | 2001-07-30 | 日本電信電話株式会社 | 音声符号化法 |
| US5884253A (en) * | 1992-04-09 | 1999-03-16 | Lucent Technologies, Inc. | Prototype waveform speech coding with interpolation of pitch, pitch-period waveforms, and synthesis filter |
| IT1264766B1 (it) * | 1993-04-09 | 1996-10-04 | Sip | Codificatore della voce utilizzante tecniche di analisi con un'eccitazione a impulsi. |
| JP3137805B2 (ja) * | 1993-05-21 | 2001-02-26 | 三菱電機株式会社 | 音声符号化装置、音声復号化装置、音声後処理装置及びこれらの方法 |
| US5504834A (en) * | 1993-05-28 | 1996-04-02 | Motrola, Inc. | Pitch epoch synchronous linear predictive coding vocoder and method |
| JP3199142B2 (ja) | 1993-09-22 | 2001-08-13 | 日本電信電話株式会社 | 音声の励振信号符号化方法および装置 |
| US5784532A (en) * | 1994-02-16 | 1998-07-21 | Qualcomm Incorporated | Application specific integrated circuit (ASIC) for performing rapid speech compression in a mobile telephone system |
| US5602961A (en) * | 1994-05-31 | 1997-02-11 | Alaris, Inc. | Method and apparatus for speech compression using multi-mode code excited linear predictive coding |
| JP3179291B2 (ja) * | 1994-08-11 | 2001-06-25 | 日本電気株式会社 | 音声符号化装置 |
| JPH08123494A (ja) * | 1994-10-28 | 1996-05-17 | Mitsubishi Electric Corp | 音声符号化装置、音声復号化装置、音声符号化復号化方法およびこれらに使用可能な位相振幅特性導出装置 |
| JPH08179796A (ja) * | 1994-12-21 | 1996-07-12 | Sony Corp | 音声符号化方法 |
| JP3292227B2 (ja) * | 1994-12-28 | 2002-06-17 | 日本電信電話株式会社 | 符号励振線形予測音声符号化方法及びその復号化方法 |
| FR2729246A1 (fr) * | 1995-01-06 | 1996-07-12 | Matra Communication | Procede de codage de parole a analyse par synthese |
| US5864797A (en) * | 1995-05-30 | 1999-01-26 | Sanyo Electric Co., Ltd. | Pitch-synchronous speech coding by applying multiple analysis to select and align a plurality of types of code vectors |
| US5664055A (en) * | 1995-06-07 | 1997-09-02 | Lucent Technologies Inc. | CS-ACELP speech compression system with adaptive pitch prediction filter gain based on a measure of periodicity |
| US5732389A (en) * | 1995-06-07 | 1998-03-24 | Lucent Technologies Inc. | Voiced/unvoiced classification of speech for excitation codebook selection in celp speech decoding during frame erasures |
| US5699485A (en) * | 1995-06-07 | 1997-12-16 | Lucent Technologies Inc. | Pitch delay modification during frame erasures |
| US5704003A (en) * | 1995-09-19 | 1997-12-30 | Lucent Technologies Inc. | RCELP coder |
| WO1997027578A1 (en) * | 1996-01-26 | 1997-07-31 | Motorola Inc. | Very low bit rate time domain speech analyzer for voice messaging |
| US5819213A (en) * | 1996-01-31 | 1998-10-06 | Kabushiki Kaisha Toshiba | Speech encoding and decoding with pitch filter range unrestricted by codebook range and preselecting, then increasing, search candidates from linear overlap codebooks |
| TW307960B (en) * | 1996-02-15 | 1997-06-11 | Philips Electronics Nv | Reduced complexity signal transmission system |
| JPH1020891A (ja) * | 1996-07-09 | 1998-01-23 | Sony Corp | 音声符号化方法及び装置 |
| US6014622A (en) * | 1996-09-26 | 2000-01-11 | Rockwell Semiconductor Systems, Inc. | Low bit rate speech coder using adaptive open-loop subframe pitch lag estimation and vector quantization |
| JPH10247098A (ja) * | 1997-03-04 | 1998-09-14 | Mitsubishi Electric Corp | 可変レート音声符号化方法、可変レート音声復号化方法 |
-
1997
- 1997-08-04 AU AU37085/97A patent/AU3708597A/en not_active Abandoned
- 1997-08-04 EP EP05008176A patent/EP1553564A3/en not_active Withdrawn
- 1997-08-04 DE DE69737012T patent/DE69737012T2/de not_active Expired - Lifetime
- 1997-08-04 CN CNB971913501A patent/CN1163870C/zh not_active Expired - Lifetime
- 1997-08-04 WO PCT/JP1997/002703 patent/WO1998006091A1/ja active IP Right Grant
- 1997-08-04 EP EP97933895A patent/EP0858069B1/en not_active Expired - Lifetime
- 1997-08-04 US US09/051,137 patent/US6226604B1/en not_active Expired - Lifetime
-
2000
- 2000-12-05 US US09/729,229 patent/US6687666B2/en not_active Expired - Lifetime
- 2000-12-05 US US09/729,420 patent/US6421638B2/en not_active Expired - Lifetime
- 2000-12-05 US US09/729,419 patent/US6549885B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US6421638B2 (en) | 2002-07-16 |
| US6687666B2 (en) | 2004-02-03 |
| CN1163870C (zh) | 2004-08-25 |
| US6549885B2 (en) | 2003-04-15 |
| US20010003812A1 (en) | 2001-06-14 |
| CN1205097A (zh) | 1999-01-13 |
| AU3708597A (en) | 1998-02-25 |
| US20010001142A1 (en) | 2001-05-10 |
| EP1553564A3 (en) | 2005-10-19 |
| EP0858069A4 (en) | 2000-08-23 |
| US20010001139A1 (en) | 2001-05-10 |
| DE69737012D1 (de) | 2007-01-11 |
| EP1553564A2 (en) | 2005-07-13 |
| WO1998006091A1 (fr) | 1998-02-12 |
| EP0858069A1 (en) | 1998-08-12 |
| EP0858069B1 (en) | 2006-11-29 |
| US6226604B1 (en) | 2001-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69737012T2 (de) | Sprachkodierer, sprachdekodierer und aufzeichnungsmedium dafür | |
| DE69932460T2 (de) | Sprachkodierer/dekodierer | |
| DE69531471T2 (de) | Mehrkanalsignalkodierung unter Verwendung gewichteter Vektorquantisierung | |
| DE60120766T2 (de) | Indizieren von impulspositionen und vorzeichen in algebraischen codebüchern zur codierung von breitbandsignalen | |
| DE69731588T2 (de) | Coderienrichtung mit verringerter komplexität für ein signalübertragungssystem | |
| DE60303214T2 (de) | Verfahren zur reduzierung von aliasing-störungen, die durch die anpassung der spektralen hüllkurve in realwertfilterbanken verursacht werden | |
| DE69814517T2 (de) | Sprachkodierung | |
| DE60121405T2 (de) | Transkodierer zur Vermeidung einer Kaskadenkodierung von Sprachsignalen | |
| DE69634179T2 (de) | Verfahren und Vorrichtung zur Sprachkodierung und -dekodierung | |
| EP1979901B1 (de) | Verfahren und anordnungen zur audiosignalkodierung | |
| DE69910240T2 (de) | Vorrichtung und verfahren zur wiederherstellung des hochfrequenzanteils eines überabgetasteten synthetisierten breitbandsignals | |
| DE69531642T2 (de) | Synthese eines Anregungssignals bei Ausfall von Datenrahmen oder Verlust von Datenpaketen | |
| EP1797552B1 (de) | Verfahren und vorrichtung zur extraktion einer einem audiosignal zu grunde liegenden melodie | |
| DE60012198T2 (de) | Kodierung der hüllkurve des spektrums mittels variabler zeit/frequenz-auflösung | |
| DE69634645T2 (de) | Verfahren und Vorrichtung zur Sprachkodierung | |
| DE69734837T2 (de) | Sprachkodierer, sprachdekodierer, sprachkodierungsmethode und sprachdekodierungsmethode | |
| DE60217522T2 (de) | Verbessertes verfahren zur verschleierung von bitfehlern bei der sprachcodierung | |
| DE69628103T2 (de) | Verfahren und Filter zur Hervorbebung von Formanten | |
| DE60124274T2 (de) | Codebuchstruktur und suchverfahren für die sprachkodierung | |
| DE69729527T2 (de) | Verfahren und Vorrichtung zur Kodierung von Sprachsignalen | |
| EP0076234B1 (de) | Verfahren und Vorrichtung zur redundanzvermindernden digitalen Sprachverarbeitung | |
| DE602004005784T2 (de) | Verbesserte Anregung für Höherband-Kodierung in einem Codec basierend auf Frequenzbandtrennungs-Kodierungsverfahren | |
| DE69636209T2 (de) | Vorrichtung zur Sprachkodierung | |
| WO2006039995A1 (de) | Verfahren und vorrichtung zur harmonischen aufbereitung einer melodielinie | |
| DE69033510T3 (de) | Numerischer sprachcodierer mit verbesserter langzeitvorhersage durch subabtastauflösung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: PANASONIC CORP., KADOMA, OSAKA, JP |